▪ Abstract The latitudinal gradient of decreasing richness from tropical to extratropical areas
is ecology's longest recognized pattern. Nonetheless, notable exceptions to the general …

Despite two centuries of exploration, our understanding of factors determining the
distribution of life on Earth is in many ways still in its infancy. Much of the disagreement …

Air pressure was tested for a relationship with species richness in pill millipedes
Sphaerotherium and the outgroup species Kylindotherium leve. There were no differences …

ABSTRACT The Tropical Conservativism Hypothesis and Biogeographical Conservativism
Hypothesis were tested in forest millipedes. Biogeographical Conservativism Hypothesis …

ABSTRACT The Tropical Conservativism Hypothesis suggests processes of speciation,
extinction, and dispersal resulted in higher species richness in the tropics and declined …

The first photographs of the Earth to be taken from outer space are said to have had a
profound influence on how humanity perceives its place in the Universe. They provided a …

Geographic patterns of species richness are influenced by many factors, but the role of
shared physiographical and physiological boundaries in relation to range-size distributions …

The search for a common cause of species richness gradients has spawned more than 100
explanatory hypotheses in just the past two decades. Despite recent conceptual advances …

▪ Abstract Most of our knowledge of biodiversity and its causes in the deep-sea benthos
derives from regional-scale sampling studies of the macrofauna. Improved sampling …

If species' ranges are randomly shuffled within a bounded geographical domain free of
environmental gradients, ranges overlap increasingly toward the center of the domain …